Oreochromis rukwaensis
Taxonomy [top]
| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | ACTINOPTERYGII | PERCIFORMES | CICHLIDAE |
| Scientific Name: | Oreochromis rukwaensis | |||
| Species Authority: | (Hildengorf & Pappenheim 1913) | |||
Common Name/s:
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Assessment Information [top]
| Red List Category & Criteria: | Vulnerable D2 ver 3.1 |
| Year Published: | 2006 |
| Assessor/s: | Bayona, J.D.R. & Hanssens, M. |
| Reviewer/s: | Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme) |
|
Justification: Restricted to the Lake Rukwa drainage. |
|
Geographic Range [top]
| Range Description: | Endemic to the Lake Rukwa catchment |
| Countries: |
Native:
Tanzania, United Republic of
|
| Range Map: | Click here to open the map viewer and explore range. |
Population [top]
| Population: | The species is commercially exploited and composed 34.17% of the total annual catch in 1977 (Bernascek 1980) rising to 70% in 1996 (Fish. Div. 1996). Catch per vessel as a measure of relative abundance declined slightly: 3.7 tons per vessel was landed in 1997 compared to 3.2 tons per vessel in 1996. The decline is only 13.5%. |
| Population Trend: |
Decreasing
|
Habitat and Ecology [top]
| Habitat and Ecology: | Found in both lakes and rivers. |
| Systems: | Freshwater |
Threats [top]
| Major Threat(s): | Over-fishing: exploitation by small meshed nets (illegal fishing gears). Siltation and land based pollution. |
Conservation Actions [top]
| Conservation Actions: | No information available. |
Bibliography [top]
|
Eccles, D.H. 1992. FAO species identification sheets for fishery purposes. Field guide to the freshwater fishes of Tanzania. Food and Agriculture Organization of the United Nations, Rome. IUCN. 2006. 2006 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 May 2006. Seegers, L. 1996. The fishes of the Lake Rukwa Drainage. Annales du Musée royal de l'Afrique Central, Sciences Zoologiques 287: 1–407. |
| Citation: | Bayona, J.D.R. & Hanssens, M. 2006. Oreochromis rukwaensis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 23 May 2012. |
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